If you compare it to match factory ammo, you dont need to reload that many to break even.9mm is about $7 per hundred if you cast your own
$3 for primers
$2 for bullets
$2 for powder
Still takes a decent amount of shooting to payoff the equipment but who's in this to save money...
For 9mm, without buying the cheapest components, I can still reload match grade ammo for less than I would pay (pre-covid) for 1K of the cheapest steel cased ammo.
I dont know what bullets you are buying for $2/100. Are you casting?